Abstract The motion of dust particles near Halley Comet is studied and the probability of dust impacts with the spacecraft in case of the VEGA (Venus-Halley)- project is determined. The formation of a crater due to a particle impact with the dust shield is considered and the necessity for using a dual-sheet bumper shield is substantiated. The thickness of a front sheet that plays a role of the particle evaporator is estimated theoretically. The numerical experiment is carried out that simulates the dynamics of collision and evaporation of a particle. Three factors causing perforations of the rear sheet are discussed, i.e. dust penetrated through holes in the front sheet, gas jets and spall fragments of the front-sheet. The consideration of these factors makes it possible to estimate basic parameters of the dual-sheet bumper shield. Flexural vibrations of the front sheet under action of the reverse gaseous jet from the rear sheet are discussed that can affect essentially the shield strength. The perturbing effect of the dust and gas fluxes on the spacecraft is studied.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Dust hazard near Halley Comet in case of the VEGA project


    Contributors:

    Published in:

    Advances in Space Research ; 2 , 12 ; 133-143


    Publication date :

    1983-01-01


    Size :

    11 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Near infrared observations of comet Halley from Vega 2

    Krasnopolsky, V.A. / Moroz, V.I. / Krysko, A.A. et al. | Elsevier | 1985



    The spectrum of comet halley obtained by VEGA-2

    Werner, R. / Guineva, V. / Stoeva, P. et al. | Elsevier | 1989


    Comet Halley: Nucleus and jets (results of the VEGA mission)

    Sagdeev, R.Z. / Avanesov, G.A. / Barinov, I.V. et al. | Elsevier | 1985


    First results of plasma and neutral gas measurements from Vega - 1 2 near comet Halley

    Gringauz, K.I. / Remizov, A.P. / Verigin, M.I. et al. | Elsevier | 1985